.enterprise-solutions {
  padding: 60px 40px;
  background: #fff;
  font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  min-height: 100vh;
}

.solutions-header {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.main-title {
  font-size: 36px;
  font-weight: bold;
  color: #333;
  margin: 0;
  position: relative;
  z-index: 2;
}

.watermark {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 48px;
  font-weight: 900;
  color: rgba(0, 0, 0, 0.03);
  z-index: 1;
  white-space: nowrap;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1400px;
  margin: 0 auto;
}

.solution-card {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 40px 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  flex-direction: column;
}

.solution-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-watermark {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 14px;
  color: rgba(0, 0, 0, 0.05);
  font-weight: bold;
  transform: rotate(15deg);
}

.card-icon {
  text-align: center;
  margin-bottom: 30px;
}

.icon-container {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  margin: 0 auto;
  position: relative;
}

.icon-container.yellow {
  background: linear-gradient(135deg, #ffd700, #ffa500);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.icon-container.grey {
  background: linear-gradient(135deg, #6c757d, #495057);
  box-shadow: 0 8px 20px rgba(108, 117, 125, 0.3);
}

.icon-container.orange {
  background: linear-gradient(135deg, #ff8c00, #ff4500);
  box-shadow: 0 8px 20px rgba(255, 140, 0, 0.3);
}

.icon-container.red {
  background: linear-gradient(135deg, #dc3545, #c71585);
  box-shadow: 0 8px 20px rgba(220, 53, 69, 0.3);
}

.card-title {
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  margin: 0 0 30px 0;
  color: #333;
}

.join-button {
  width: 100%;
  padding: 15px 30px;
  border: none;
  border-radius: 50px;
  font-size: 18px;
  font-weight: bold;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.join-button.yellow-orange {
  background: linear-gradient(135deg, #ffd700, #ff8c00);
}

.join-button.grey-blue {
  background: linear-gradient(135deg, #6c757d, #007bff);
}

.join-button.orange-red {
  background: linear-gradient(135deg, #ff8c00, #dc3545);
}

.join-button.red-pink {
  background: linear-gradient(135deg, #dc3545, #e91e63);
}

.join-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.card-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.detail-item {
  border-bottom: 1px solid #f0f0f0;
  padding-bottom: 20px;
  margin-left: 10px;
}

.detail-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.detail-item h3 {
  font-size: 16px;
  font-weight: bold;
  color: #666;
  margin: 0 0 8px 0;
}

.detail-item p {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
  margin: 0;
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .solutions-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }
  
  .solution-card {
    min-height: 550px;
    padding: 30px 25px;
  }
}

@media (max-width: 768px) {
  .enterprise-solutions {
    padding: 40px 20px;
  }
  
  .solutions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .main-title {
    font-size: 28px;
  }
  
  .watermark {
    font-size: 36px;
  }
  
  .solution-card {
    min-height: auto;
    padding: 25px 20px;
  }
  
  .card-title {
    font-size: 24px;
  }
  
  .join-button {
    font-size: 16px;
    padding: 12px 25px;
  }
}

@media (max-width: 480px) {
  .enterprise-solutions {
    padding: 30px 15px;
  }
  
  .main-title {
    font-size: 24px;
  }
  
  .watermark {
    font-size: 28px;
  }
  
  .solution-card {
    padding: 20px 15px;
  }
  
  .icon-container {
    width: 60px;
    height: 60px;
    font-size: 30px;
  }
  
  .card-title {
    font-size: 20px;
  }
}
